Database/Humectant/Zinc Borate
100% natural origin · ISO 16128

Is Zinc Borate natural?

Yes. Zinc comes from zinc ore and borate from mined borax or colemanite, so every atom is mineral origin.

INCI nameZinc Borate
CAS1332-07-6
FormulaB2O6Zn3 · 313.8 Da
FunctionHumectant
FeedstockDominant route reacts zinc oxide with boric acid…

How we scored it

B2O6Zn3 313.8 Da: zinc (ore) and borate (borax or colemanite) both mineral-derived: 313.8 / 313.8 = 1.00.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Dominant route reacts zinc oxide with boric acid made from borate minerals in water, then dries the precipitate. No petrochemical route exists.

In plain English

A white inorganic powder made from zinc and borate (boron-oxygen) minerals. It is listed with a humectant function in cosmetic ingredient databases and is also widely used as a fire retardant in plastics.

Structure

2D structure of Zinc Borate

trizinc diborate

PubChem CID 167155 ↗

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2Zinc Borate. PubChem CID 167155. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3ZINC BORATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4ZINC BORATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ZINC%20BORATE